SPI 5/16-18 UNC-2B Double End Thread Plug Gage GO NOT GO
Brand: SPI (Swiss Precision Instruments)
Thread Size: 5/16″ – 18
Thread Type: UNC (Unified Coarse)
Thread Class: 2B (Internal Thread)
Gage Type: Double end GO and NOT GO (NOGO) thread plug gage
Pitch Diameter (PD): GO .2764″ / NOT GO .2817″
Material: Hardened tool steel
Used condition, with normal signs of wear. Comes as shown, please check pics.
